The school bus was taking students from Denver Montessori Junior/Senior High School, 4250 Shoshone St., home at the end of the school day.

Thirty-nine students were on the bus, 21 of whom were not injured. Those not taken to the hospital were treated at the scene, mostly for bumps and bruises, Jones said.

Ortiz, who also suffered bumps and bruises, was taken to a hospital and was arrested, police said. Four others were in the SUV, two adults and two children. All of them were taken to a hospital with one of the children — who is under 7 years old — suffering critical injuries, according to court records and police.

A general assignment reporter for The Denver Post, Tom McGhee has covered business, police, courts, higher education and breaking news. He came to The Post from Albuquerque, N.M., where he worked for a year and a half covering utilities. He began his journalism career in New York City, worked for a pair of community weeklies that covered the west side of Manhattan from 14th Street to 125th Street.